dfx wallet set-name --ic gio-wallet
Set name to gio-wallet.
➜ ~ dfx wallet addresses --ic
Id: jciiu-jvv7w-fbeyp-kntdh, Kind: Unknown, Role: Controller, Name: No name set.
I’ve never seen someone try that command 
Looks like it doesn’t work at all. It calls the wrong function on the wallet. PR to fix it.
The counterpart to check the name would be dfx wallet name, not dfx wallet addresses
dfx wallet set-name gio-Testname
Set name to gio-Testname.
➜ ~ dfx wallet name --ic
Name hasn’t been set. Call dfx wallet set-name to give this cycles wallet a name.